// app.js
App({
	request(obj){ //发起网络请求 Obj={ url, timeout, }
	return new Promise((resolve, reject)=>{
		wx.request({
			...obj,
			complete: r => { //r-请求返回的结果
				if (r.errMsg == 'request:ok' && r.data != null) { //成功获得数据
					resolve(r.data)
				} else { //否则，返回null
					resolve(null)
				}
			},
		})
	})
},
 
})
